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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.tomcat.util.buf;
import java.nio.charset.CharacterCodingException;
import java.nio.charset.CodingErrorAction;
import java.nio.charset.StandardCharsets;
import org.junit.Assert;
import org.junit.Test;
public class TestStringCache {
private static final byte[] BYTES_VALID = new byte[] { 65, 66, 67, 68};
private static final byte[] BYTES_INVALID = new byte[] {65, 66, -1, 67, 68};
private static final ByteChunk INPUT_VALID = new ByteChunk();
private static final ByteChunk INPUT_INVALID = new ByteChunk();
private static final CodingErrorAction[] actions =
new CodingErrorAction[] { CodingErrorAction.IGNORE, CodingErrorAction.REPLACE, CodingErrorAction.REPORT };
static {
INPUT_VALID.setBytes(BYTES_VALID, 0, BYTES_VALID.length);
INPUT_VALID.setCharset(StandardCharsets.UTF_8);
INPUT_INVALID.setBytes(BYTES_INVALID, 0, BYTES_INVALID.length);
INPUT_INVALID.setCharset(StandardCharsets.UTF_8);
}
@Test
public void testCodingErrorLookup() {
System.setProperty("tomcat.util.buf.StringCache.byte.enabled", "true");
Assert.assertTrue(StringCache.byteEnabled);
StringCache sc = new StringCache();
sc.reset();
for (int i = 0; i < StringCache.trainThreshold * 2; i++) {
for (CodingErrorAction malformedInputAction : actions) {
try {
// UTF-8 doesn't have any unmappable characters
INPUT_VALID.toString(malformedInputAction, CodingErrorAction.IGNORE);
INPUT_INVALID.toString(malformedInputAction, CodingErrorAction.IGNORE);
} catch (CharacterCodingException e) {
// Ignore
}
}
}
Assert.assertNotNull(StringCache.bcCache);
// Check the valid input is cached correctly
for (CodingErrorAction malformedInputAction : actions) {
try {
Assert.assertEquals("ABCD", INPUT_VALID.toString(malformedInputAction, CodingErrorAction.IGNORE));
} catch (CharacterCodingException e) {
// Should not happen for valid input
Assert.fail();
}
}
// Check the valid input is cached correctly
try {
Assert.assertEquals("ABCD", INPUT_INVALID.toString(CodingErrorAction.IGNORE, CodingErrorAction.IGNORE));
} catch (CharacterCodingException e) {
// Should not happen for invalid input with IGNORE
Assert.fail();
}
try {
Assert.assertEquals("AB\ufffdCD", INPUT_INVALID.toString(CodingErrorAction.REPLACE, CodingErrorAction.IGNORE));
} catch (CharacterCodingException e) {
// Should not happen for invalid input with REPLACE
Assert.fail();
}
try {
Assert.assertEquals("ABCD", INPUT_INVALID.toString(CodingErrorAction.REPORT, CodingErrorAction.IGNORE));
// Should throw exception
Assert.fail();
} catch (CharacterCodingException e) {
// Ignore
}
}
}
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